Turbine wheel



FIG. 1 is a front perspective view of a turbine wheel showing our new design;

FIG. 2 is a front view of the turbine wheel shown in FIG. 1;

FIG. 3 is a side view of the turbine wheel shown in FIG. 1; and,

FIG. 4 is a rear view of the turbine wheel shown in FIG. 1. 

The ornamental design for a turbine wheel, as shown and described. 